Lock



S. TANSKI.

L0 CK. APPLICATION HLED DEC-29, 1920.

1 ,409,429. Patented Mal. 14;"1922,

Stanley Eras n- UNITED STATES PATENT OFFICE,

STANLY TANSKI, or EAST vANnEnGnIrT, PENNSYLVANIA,

LOCK. Y I

To aZlw/wm it may concern Be it known that I, STANLY TANSKI, citizen of the United States, residing at East Vandergrift, in the county of Westinoreland and State of Pennsylvania, have invented certain new and useful Improvements in- Locks, of which the following is a specification.

This invention relates to door locks, and it has for an object to provide a novel form of lock, of considerable strength, and in which a simple and inexpensive means is employed to render the picking thereof difficult, the invention being designed more particularly for application to sliding doors, such as barn doors or the, like.

For further comprehension of the invention, and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appended claims in which the various novel features of the invention are more particularly set forth. I

Fig. 1 of the drawings is a perspective view of a lock constructed according to the invention, showing a portion of a door in which it is fixed.

Fig. 2 is a'perspective view showinga portionof the door with the keeper in position thereon.

Fig. 3 is a face View of the lock with the face plate removed and certain of theinterior parts shown in vertical section.

Fi 4 is a transverse vertical section on the l1ne H of Fig. 3.

Fig. 5 is a similar View to Fig. 3, but showing a modified construction of the lock.

As here shown In improved lock comprises a casing 10 0 generally rectangular shape and formed at upper and lower ends with holes 11 for the insertion of screws 12 7 whereby it may be secured to the sliding door 13, the casing being set into the edge of the door with its outer face flush with said edge, and being here shown as of a width equal to the thickness of the door, with its sides flush with the opposite faces of the latter. Upon the outer face of the casing is a removable face plate 14: secured in place by screws 15.

Mounted in the casing 10, to be slidable in a direction transversely of the door 13, is a bolt 17 which may be of vertically elongated rectangular cross section and is of a length somewhat greater than the width of the casing 10, being accommodated in groove Specification of Letters Patent. Patented lVIaL- 14, 1922.:

Application filed December 29, 1920. Serial No. $33,793. I

18 cut in the front face of the casing from side to sidethereof andbein'g'held against displacement by the face plate 151'.- This I bolt 17 has a knob or handle 20 on the end thereof which projects-at the outer face of the doorr 1 Arranged to slide vertically in the casing 10 and engage and hold the bolt 17, is atumbler bar 21 which is held against out-ward displacement by the face-plate 14 and which extends vertically across the face of the bolt through a widened groove 22 in the latter, the lower and upper portions'being widened to project under and 'overthe bolt, the widened upper portion forming a hook 'or lug 21 which isadapted to engage in a notch 23 in the bolt to lock the latter.

The tumbler bar 21 is moved vertically, to bring the lug 21 into orout of engagement with the n'otch22, by the following means.

Formed in the lower portion of the tumbler bar is'a. circular aperture 24: which registers with, but is eccentrically disposed with relation to, a larger aperture or boring 25 which extends inwardly from the outer edge wall-of the casing 10 to the groove 26, in

which the tumbler bar is located, this groove being of slightly greater length than the tumbler bar to permit vertical movement'of the latter. Rotatably mounted inthe outer end of thisboring 25 isa disk27 havinga key-hole 28 therein andbeing' provided on its peripherywith gear teeth 29. As' here shownthe'disk 27-maybe held in placebyfla plate 30' secured in place by screws 31-, a-

which operates with acam action on the wall of the aperture 24 in the tumbler, this aperture being so located and proportioned that when the bolt is locked, with the turnbler in its lowered position the key must be inserted with the bit 36 turned downwardly in order for the latter to enter the aperture 24, the upper wall of which is then close to the shank of the key. As will be apparent, when the tumbler is in locked position with the lug 21' engaging in the notch 23, if the disk 27 is not in a position with the keyhole 28 turned downwardly the key can not be inserted directly into the aperture 24' and difficulty will be experienced in opening the lock. After the key, therefore, is with drawn the head 34 is rotated to turn the disk 27 to a position with the key-hole 28 facing other than downwardly.

The bolt 17 may engage in a suitable keeper L0 secured by screws 41 in; the door jamb- 42, the opening 43 in the keeper facing transversely of the door as will be understood.

In the modification shown inFig. 5 the construction is in general the same except for the operating of the tumbler bar. In this construction the groove 26 which accommodates. the; latter is extended I downwardly to the bottom of the casing 10, and the tumbler bar extends downwardly in the groove to a position flush with the bottom of the casing when in locked position, the boltbeing released by pressing upward with the fingeii. on the lower end of the tumbler bar, it being understood that the casing 10 will not be sunk into the door in this construction;

Having thus described my-invention, what I claim as new'and desire to protect by Letters Patent of the United States is as. follows: I a V 1. In a look, a casing, a, bolt slidable in said casing from side to side thereof, said bolt being longer than'the width of the casing and having a notch formed in one edge thereof, and a tumbler bar slidable in; the casing at right angles to the bolt and having a part adapted: to engage in said notch, said tumbler having a circular aperture formed therein adapted to receive the bit of a key, and'said casing presenting a key-hole-registering with said aperture.

2;. In a look, a casing, a bolt' slidable' in said casing from side toside thereof, said bolt being longer than the width of the cas- 45 ing and having a notch formed in one edge thereof, and a tumbler bar slidable in the casing at right angles to the bolt and having a part adapted to engage in said notch, said tumbler having a circular aperture formed therein and adapted to receive the bit of a key, and said casing presenting a boring of larger diameter than said aperture leading inwardly to the said tumbler in registry with the said aperture, and a keyhole disk rotatable in said boring.

3. In a lock, a casing, a bolt slidable in said casing from side to side thereof, said bolt being longer than the, width of the casing and having a notch formed in one edge thereof, and a tumbler bar slidable inthe casing at right angles to the bolt and having a part adapted to engage. in said notch, said tumbler having a circular aper-. ture formed therein, and adapted to receive the bit of a key, and said casing presenting a boring of larger diameter than said aperture leading inwardly to the said tumbler in registry with the said aperture, and a key.- hole disk rotatable in said boring, said disk having gear teeth formed on its periphery, and a pinion meshing with said gear teeth and adapted for manual rotation toangularly adjust the key-hole in the said disk;

4c. In a. look, a casing, a bolt slidable, in

said casing from side to side thereof and having a notch in its. upper edge and a widened groove in its outer face, a tumbler bar extending upwardly across the said bolt and being accommodated in said widened groove, said tumbler" bar having a: hooked upper end adapt-ed to engage in said notch, said tumbler bar having a widened lower end formedwith a circular aperture adapted to be engaged by the bit of a. key. V In testimony whereof I have affixed my signature. 7

STANLY TANSKI. 

